Seiko Cal. 3856 - 670

Seiko 3856-670

The 3856-670 is a sought-after Automatic piece from Seiko's golden era. The Bidirectional bezel and 44mm case give it a distinctive presence on the wrist. [seikata-wm-256955fb6026]

Also known as: Baby Tuna, Flighty

Specifications

Movement
Automatic
Case Material
Hardlex-Coated Steel
Case Width
44mm
Case Thickness
9.9mm
Lug Width
20mm
Crystal
Mineral
Bezel
Bidirectional
Water Resistance
180m
Dial Color
Navy
Jewels
23j
Frequency
21,600 bph
Power Reserve
36 hours
Year
1976

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